为了适应装有可启动光盘的电脑，一些BIOS还允许将光驱指定为启动驱动器。
In order to adapt to a bootable CD-ROM with the computer , some BIOS will also allow the drive designated as the boot drive .
把你的系统盘放到光驱中，然后设置从光驱启动，然后选择恢复菜单，输入管理员密码。
Put Windows XP CD in CD drive , boot from CD and choose Repair menu , type in .
光驱启动光驱启动光驱启动